an amendment to the U.S. Constitution that guarantees a level of sovereign immunity to states by forbidding federal courts from ruling on cases brought against a state by a citizen of another state. The 11th Amendment, ratified in 1795, was passed after the Supreme Court ruled, in Chisholm v. Georgia, in favor of a citizen of South Carolina who was trying to recover debt that was owed him by the state of Georgia. The passage of the amendment overturned this ruling.

an amendment to the U.S. Constitution that ensures that no person can be elected to more than two four-year terms as President of the United States. The 22nd Amendment, ratified in 1951, was passed in reaction to President Franklin D. Roosevelt's four terms in office.

abbreviation of "four-wheel drive," a car that drives by means of all four wheels rather than the rear wheels only, or the drive system of such, in which both front and rear wheel axles are turned by the drive shaft.

abbreviation of "ampere" or "amperes," a unit of electrical current that refers to the quantity of current that passes through a resistor of one ohm when a potential of one volt is applied, equal to one coulomb per second.

A is the first letter of the English alphabet. We also write it as a. The English alphabet has 26 letters, but every letter has a large size and a small size. We call each letter by the same name, but we often write the large letter and the small letter a little differently. [6 definitions]